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| author | Ingo Molnar <mingo@elte.hu> | 2008-12-27 11:30:05 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-27 11:30:05 +0100 |
| commit | 34bf5d0ff54d03f0a8ed690d47efb806ee2fffcb (patch) | |
| tree | 5465f999b2b067744220b66c89b75f0f10445d6e /arch/x86/kernel/process.c | |
| parent | bd8b96dfc216eebc72950a6c40da8d3eca8667df (diff) | |
| parent | 79a66b96c339626a3e4b226fefc0e45244cfe6ff (diff) | |
Merge branch 'x86/core' into x86/cleanups
Diffstat (limited to 'arch/x86/kernel/process.c')
| -rw-r--r-- | arch/x86/kernel/process.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index b06100f1d61..b8f3e9dbabd 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -9,6 +9,7 @@ #include <linux/pm.h> #include <linux/clockchips.h> #include <asm/system.h> +#include <asm/apic.h> unsigned long idle_halt; EXPORT_SYMBOL(idle_halt); @@ -123,6 +124,21 @@ void default_idle(void) EXPORT_SYMBOL(default_idle); #endif +void stop_this_cpu(void *dummy) +{ + local_irq_disable(); + /* + * Remove this CPU: + */ + cpu_clear(smp_processor_id(), cpu_online_map); + disable_local_APIC(); + + for (;;) { + if (hlt_works(smp_processor_id())) + halt(); + } +} + static void do_nothing(void *unused) { } @@ -271,7 +287,7 @@ static void c1e_idle(void) rdmsr(MSR_K8_INT_PENDING_MSG, lo, hi); if (lo & K8_INTP_C1E_ACTIVE_MASK) { c1e_detected = 1; - if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) + if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC)) mark_tsc_unstable("TSC halt in AMD C1E"); printk(KERN_INFO "System has AMD C1E enabled\n"); set_cpu_cap(&boot_cpu_data, X86_FEATURE_AMDC1E); |